Electronic data
Shells: 2, 8, 18, 32, 17, 1
Orbitals: [Xe] 4f14 5d9 6s1
Electronegativity: 2.2, 1.4
1. Ionization potential: 9.0 eV
2. Ionization potential: 18.563 eV
3. Ionization potential: -- eV
Oxidation states: 4, 2, 0
Electrical conductivity: 0.0966 10^6
Thermal data
Melting point: 1772 °C
Boiling point: 3827 °C
Specific heat: 0.13 J/gK
Heat of fusion: 19.60 kJ/mol
Heat of vaporization: 510.0 kJ/mol
Thermal conductivity: 0.716 W/cmK
Steric data
Atomic radius: 1.83 Å
Ionic radius: 0.63 Å (+4)
Covalent radius: 1.30 Å
Atomic volume: 9.10 cm³/mol
Density (293 K): 21.45 g/cm³
Crystal structure: cubic face centered
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